GPS & Activity File Anonymizer

Protect your location privacy in fitness and GPS files

GPX (GPS Exchange)

FIT (Garmin/ANT+)

GPS tracks from fitness apps, sports watches, and bike computers contain precise location data that can reveal where you live, work, and travel. LogScrub helps you anonymize this data before sharing activities or uploading to third-party services.

Screenshot placeholder: GPS file with coordinate anonymization options

Why GPS Privacy Matters

GPS tracks can reveal your home address (where runs start/end), workplace location, daily routines, and travel patterns. Even "public" activity sharing can expose sensitive location data.

Supported Formats

Format	Sources	Processing
GPX	Strava, Komoot, AllTrails, most GPS apps	Direct anonymization (XML-based)
FIT	Garmin, Wahoo, Zwift, bike computers	Converted to GPX, then anonymized

FIT File Processing

FIT files are Garmin's binary format. LogScrub converts them to GPX format for anonymization. The GPX output includes GPS track, elevation, timestamps, heart rate, cadence, power, and temperature data. You can then anonymize the GPX and download the result.

FIT to GPX Workflow

FIT file → Convert to GPX → Anonymize coordinates → Download GPX

Privacy Options

Strip Health Data

Remove heart rate, cadence, and power data that can reveal your fitness level and identity.

Strip Temperature

Remove ambient temperature readings that can correlate with specific times and locations.

Strip Elevation

Remove altitude data that can help identify specific routes and locations.

Strip Timestamps

Remove time data to hide when activities occurred, protecting your daily schedule.

Before & After Examples

Stripping Health Data

Remove personal fitness metrics like heart rate, cadence, and power.

Track Point with Health Data Removed

Before

<trkpt lat="37.7749" lon="-122.4194">
  <ele>10</ele>
  <time>2024-01-15T08:00:00Z</time>
  <extensions>
    <gpxtpx:TrackPointExtension>
      <gpxtpx:hr>142</gpxtpx:hr>
      <gpxtpx:cad>85</gpxtpx:cad>
      <gpxtpx:power>210</gpxtpx:power>
    </gpxtpx:TrackPointExtension>
  </extensions>
</trkpt>

After (health data stripped)

<trkpt lat="37.7749" lon="-122.4194">
  <ele>10</ele>
  <time>2024-01-15T08:00:00Z</time>
</trkpt>

Stripping Timestamps

Remove time data to hide when activities occurred.

Track Point with Timestamp Removed

Before

<trkpt lat="37.7749" lon="-122.4194">
  <ele>10</ele>
  <time>2024-01-15T08:00:00Z</time>
</trkpt>

After (timestamp stripped)

<trkpt lat="37.7749" lon="-122.4194">
  <ele>10</ele>
</trkpt>

What Can Be Removed

Heart rate - Personal fitness metric that can identify individuals
Cadence - Running/cycling rhythm data
Power - Cycling power meter data (watts)
Temperature - Ambient temperature readings
Elevation - Altitude data that can identify locations
Timestamps - Date/time revealing your schedule
PII in metadata - Names, emails, device info in GPX/FIT files

FIT File Conversion

FIT files (Garmin's binary format) are automatically converted to GPX. You can choose to include or strip the following data:

Data Type	GPX Element	Can Strip?
GPS position	`<trkpt lat="..." lon="...">`	Always included
Elevation	`<ele>`	Yes
Timestamp	`<time>`	Yes
Heart rate	`<gpxtpx:hr>`	Yes
Cadence	`<gpxtpx:cad>`	Yes
Power	`<gpxtpx:power>`	Yes
Temperature	`<gpxtpx:atemp>`	Yes

FIT Export Limitation

FIT files can only be converted to GPX format. The original binary FIT format cannot be re-exported due to format complexity. Download your anonymized activity as GPX.

Common Use Cases

Sharing fitness activities - Post runs/rides without revealing home location
Route sharing - Share hiking trails without exposing parking spots
Bug reports - Report GPS/app issues without disclosing location
Training data - Share workouts with coaches privately
Public datasets - Contribute to research anonymously

Compatible Sources

Fitness Platforms

Strava, Garmin Connect, Wahoo, Komoot, TrainingPeaks, Zwift

Devices

Garmin watches, Wahoo bike computers, Polar, Suunto, Coros

Apps

AllTrails, Gaia GPS, Ride with GPS, MapMyRun, smartphone GPS apps

Ready to protect your location privacy?

Drop your GPX or FIT file into LogScrub to anonymize your GPS tracks.

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